QID 150456

Date Published: 2022-02-02

QID 150456: Apache HTTP Server NULL pointer dereference and Server Side Request Forgery (SSRF) Vulnerability (CVE-2021-44224)

The Apache HTTP Server, colloquially called Apache, is a free and open-source cross-platform web server software.

On affected versions of Apache HTTP Server, NULL pointer dereference or SSRF vulnerability exists in forward proxy configurations.

Affected Versions:
Apache HTTP Server from 2.4.7 to 2.4.51

QID Detection Logic (Unauthenticated):
This QID sends a HTTP GET request and checks the response headers to confirm if the host is running vulnerable version of Apache HTTP Server.

Successful exploitation of this vulnerability could allow a remote attacker to send specially crafted HTTP requests and trick the web server to initiate requests to arbitrary systems or cause NULL pointer dereference error and crash the web server.

CVSS V3 rated as Critical - 8.2 severity.

CVSS V2 rated as High - 6.4 severity.

Solution

Customers are advised to upgrade to Apache HTTP Server 2.4.52 or later to remediate this vulnerability. For more information related to this vulnerability please refer Apache Security advisory

Vendor References

Apache HTTP Server Security Advisory - httpd.apache.org/security/vulnerabilities_24.html

CVEs related to QID 150456

CVE-2021-44224 |

Software Advisories

Advisory ID	Software	Component	Link
Apache HTTP Server Security Advisory			httpd.apache.org/security/vulnerabilities_24.html

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